plain bearings

Function Plain bearings support and guide moving components inside the engine. Their primary purpose is to facilitate the virtually wear-free rotation of these components. Plain bearings comprise one or two bearing shells which are locked firmly in place in the bearing seat. The bearing shells wrap around the rotating shaft at the bearing journals.The wear on a plain bearing engine occurs when the engine is first started. On startup there is no oil flow or oil pressure so there is a minute amount of wear before the oil pressure comes up. Plain Bearings with no bushing are usually used for the camshaft in the cylinder head. There are several ways they are used.

Plain Bearings. The earliest blocks used plain bearings, but they have slowly given way to higher-performing bearings. Plain bearings have the least number of moving parts. A long lifespan and low maintenance with heavy load applications are the main benefits of plain bearings.

Bearing Number	Bore Dia	Outer DIa	Width	Size
AST AST40 5540 plain bearings	68/710	710x870x74	710	870
34,925 mm x 55,575 mm x 19,558 mm SIGMA GAZ 106 SA plain bearings	7952DT	260x360x46	260	360
AST AST800 3840 plain bearings	462/453X	57.15x104.775x30.162	57,15	104,775
360 mm x 520 mm x 258 mm LS GEH360XT plain bearings	672	2x4x1.2	2	4
100 mm x 150 mm x 70 mm LS GE100XT/X plain bearings	629ZZ	9x26x8	9	26
AST AST20 28IB28 plain bearings	6802Z	15x24x5	15	24
10 mm x 21 mm x 10 mm NMB MBT10 plain bearings	676A	6x10x2.5	6	10
38,1 mm x 42,069 mm x 31,75 mm INA EGBZ2420-E40 plain bearings	67787/67720CD+X2S-67787	174.625x247.65x103.188	174,625	247,65
AST AST20 WC10IB plain bearings	6800	10x19x5	10	19
100 mm x 150 mm x 100 mm SIGMA GEG 100 ES plain bearings	6805	25x37x7	25	37
AST ASTEPBW 2644-015 plain bearings	676AZZ	6x10x3	6	10
LS SIGEW12ES plain bearings	674A	4x7x2	4	7